CA1237089A - Paper feed control in a printer - Google Patents
Paper feed control in a printerInfo
- Publication number
- CA1237089A CA1237089A CA000472507A CA472507A CA1237089A CA 1237089 A CA1237089 A CA 1237089A CA 000472507 A CA000472507 A CA 000472507A CA 472507 A CA472507 A CA 472507A CA 1237089 A CA1237089 A CA 1237089A
- Authority
- CA
- Canada
- Prior art keywords
- paper feed
- platen
- manual
- detection
- printer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/36—Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
- B41J11/42—Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering
Landscapes
- Handling Of Sheets (AREA)
- Character Spaces And Line Spaces In Printers (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A paper feed system in a printer includes a platen for supporting a recording paper sheet, a paper feed drive motor, and a transmission gear mechanism for transferring the rotation of the paper feed drive motor to the platen so as to conduct an automatic paper feed operation. The paper feed system further allows a manual paper feed operation wherein the platen is manually rotated.
A detection system is provided which detects the manual paper feed operation. If the manual paper feed operation has been conducted before the automatic paper feed operation, a compensating paper drive is first con-ducted when an automatic paper feed instruction is developed. In the compensating paper drive, the platen is first driven to rotate in a reverse direction by a predetermined amount and then to rotate in a forward direction by the same amount, thereby compensating for the displacement of the paper sheet location caused by the backlash of the transmission gear mechanism during the manual paper feed operation.
* * * * * * * * * *
A paper feed system in a printer includes a platen for supporting a recording paper sheet, a paper feed drive motor, and a transmission gear mechanism for transferring the rotation of the paper feed drive motor to the platen so as to conduct an automatic paper feed operation. The paper feed system further allows a manual paper feed operation wherein the platen is manually rotated.
A detection system is provided which detects the manual paper feed operation. If the manual paper feed operation has been conducted before the automatic paper feed operation, a compensating paper drive is first con-ducted when an automatic paper feed instruction is developed. In the compensating paper drive, the platen is first driven to rotate in a reverse direction by a predetermined amount and then to rotate in a forward direction by the same amount, thereby compensating for the displacement of the paper sheet location caused by the backlash of the transmission gear mechanism during the manual paper feed operation.
* * * * * * * * * *
Description
The present invention relates to a paper feed control system in a printer, e.g. a typewriter, and, more partic~llarly, to a paper feed control systern which compensates for a feed error caused by the backlash of a transmission gear mechall i sm .
A paper feed system in a printer, especially a typewriter, generally includes a platen for supporting a recording paper sheet. The platen is mechanically connected to a paper feed drive motor such as a pulse motor via a transmission gear mechanism. The platen is driven to rotate by the paper feed drive motor so that the recording paper sheet mounted on the platen is fed forward or backward (reverse) to position the recording paper sheet at a desired location.
In such a paper feed system, an accurate paper positioning is difficult to control due to the backlash in the transmission gear mechanism which is disposed between the platen and the paper feed drive motor, or due to the looseness included in the bearing portion of the transmission gear mechanism.
3~7~
The backlash greatly influences on the accuracy of the paper sheet posi-tion-ing if the printing operation is conducted after a certai.n ainount of Eorwar(l feed, and then the printing operation is carried out subsequent to a certain amount of reverse feed. Therefore, in the conventional system, when the rever.se feed is conducted, the reverse feed is first conducted to a predeter-mined amount which is greater than a desired amount by an excess distance corresponding to several pulses, and then, ttle forward- feed is carried out by the excess distance so as to minimize the positioning error caused by the backlash.
However, as is well known, the paper feed is rnanually conduc$ed in addition to the motor driven automatic feed. In the manual feed operation, the platen is manually rotated to shift the recording paper sheet around the platen. In the conventional system, the positioning error caused by the backlash can not be compensated when the manual feed is conducted between two sequential operations of the motor driven a~toma$ic feed More specifically, when the motor driven automatic feed is conducted after the manual forward feed or the manual reverse feed, the motor driven automatic feed is carried out from the position which includes the backlash error created in the manual feed operation.
Accordingly, an object of the present invention is to provide a novel and improved paper Eeed control system in a printer such as a typewriter.
The present inventi.on wi:ll become more readi:ly apparent from the detailed descri.ption given hereinafter. It should be understood/ however, that the detalled descri.ption and specifi.c examples, whi]e indlcating preEerred embodiments of lie invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
The present invention provi.des a paper Eeed control system in a printer which includes a platen, a paper weed drive motor and a transmission gear mechanism disposed between the paper feed drive motor and the platen for conducting automatic paper feed, and wherein a manual paper feed operation can be effected by manual rotation of the platen, the paper feed control system comprising manual papex feed detection means for providing a detection output in response to the manual paper feed operation, temporary storage means for temporarily storing the detection output of the manual paper feed detection means, determination means for determini.ng the condition of the temporary storage means when an automatic paper feed instruction is developed and compensating drive means for rotating the platen .in a reverse direction by a predetermined amount and, then, rotating the platen in a forward direction by the predetermined amount if the determination means determines that the manual paper feed detection means has detected a manual paper feed operation, whereby prior to rescuing automatic paper feed the platen is adjusted to reduce backlash error that is produced in conducting the manual paper feedO
I, By this reverse and forward paper drive before initiating an actual printing operation, backlash error due to the manual paper feed is minimized.
The present invention will be better understood from the detailed description of an embodiment thereof given heFeinbelow and shown in the accompanying drawings, which are given by way of illustration only and thus are not limitative of the present invention and wherein:
FIGURE 1 is a circuit diagrarn of an essential part of an embodiment of a paper feed control system of the present invention;
FIGURE 2 is a flow chart for explaining an operational mode of the paper feed control system; and FIGURE 3 is a plan view of a slit plate included in the paper feed control system of FIGURE 1.
7~ 3~3 A paper feed control system embodying the present invention includes manual paper feed detection unit which detects when the manual paper feed is conducted, The manual paper feed detection unit incl-ldes two sensing devices.
The first sensing device includes a slit plate secured to a rota-ting shaft of apaper feed drive motor, and an optical detection unit associated with the slit plate. The second sensing device includes a detection member associated with a clutch mechanism of the transmisslon gear mechanism which is disposed between a platen and a paper feed drive motor.
The first sensing device is effective to detect a first manual operation mode wherein the manual paper feed is conducted by rotating a knob secured to the platen while the platen is mechanically connected to $he shaft of the paper feed drive motor via the clutch mechanism. The second sensing device is effective to detect a second manual feed operation mode wherein the platen is manually rotated in order to conduct a fine adjustment while the platen is disconnected from the paper feed drive motor through the use oE the clutch mechanism.
As shown in Figure 1, the first sensing device includes a slit plate 10 secured to the rotating shaft oE the paper feed drive motor, a light emitting element 12, and a light responsive element 14 which detects a light beam emitted from the light emitting element 12 and passing through the slit plate 10. In the first mode of manual operation, the rotating shaft of the paper feed drive motor is manually rotated via the platen and the clutch mechanism. That is, the slit plate 10 rotates when the first mode of manual paper feed i9 conducted.
3'7~
The slit plate 10 is provided with slits 100, 10:2, 104, 106, 108 and 110 as shown in FIGURE 3. In the automatic paper feed operation, the paper feed drive motor (a four-phase pulse motor) is contro11ed in a fixed pi se reLntion-ship. More specif icQ11y, the motor drive iB conducted in a Eour step unit, namely A~B ~A~B~A, and the rmotor rotation is controlled in such a manner that the paper feed drive motor is stopped at phase A. The s:Lits 100, 102, 104, 106, 108 and 110 are provided at positions corresponding to the above-mentioned phase A.
Accordingly, if the first mode of manual feed is conducted, the slit plate 10 rotates to repeatedly interrupt the light beam emitted from the light emitting element 12. A first detection output (+Vcc~ is generated on an output line 16 when the light responsive element 14 does not receive the light beam emitted from the light emitting element 12. That is, the detection output (~Vcc) indicates when the first mode of manual paper feed is being conducted. While the first mode of manual paper feed is conducted, the paper feed drive motor is subject to the A phase control and, therefore, the paper feed drive motor is stopped at the position corresponding to phase A by means of an electrical detent force.
The second sensing device includes a sensor 20 associated with the clutch mechanism which is disposed between the platen and the paper feed drive motor. The sensor 20 develops a second detection output (+Vcc) on an output line 22 when the clutch mechanism is disconnected.
The output lines 16 and 22 are connected to an OR gaze 30. That is, the first and second detection outputs are introduced into the OR gate 30. An output signal of -the OR gate 30 is introcluced into an input terminal of an AND gate 32. An output signal of the AND Nate 32 is introduced into a set input terminal of a state memory device (flip-flop) 34. The o-ther input terminal of the AND gate 32 is connected to receive a motor drive signal MD, which controls the paper feed drive motor, via an inverter 36. Accordingly, the AND gate 32 is disabled when the automatic paper feed is conducted by the paper feed drive motor, and the ANI~ gate 32 is enabled when the automatic paper feed is not conducted, when the manual paper fled can be conducted.
If the manual paper feed operation is conducted while the automatic paper feed is not being conducted, either one of the first and second sensing devices detects the manual paper feed operation, and develops the detection output.
The detection output is temporarily stored in the state memory device ([lip-flop) 34. That is, the set state of the state memory device ~flip-flop) 34 indicates that the manual paper feed operation has been conducted. Contrar-ily, the reset state of the state memory device (flip-flop) 34 indicates that the manual paper feed operation has not been conducted.
When the automatic paper feed instruction is developed in the actual printing operation, the control system first checks the condition of the state memory device (flip-flop) 34 as shown in FIGURE 2. If the state memory device (flip-flop) 34 is in the set state, a compensating operation of steps nl, n2 and n3 isfirst conducted and, then, the actual paper feed opera-tion is conducted.
More specifically, if the manual paper feed operation has been conducted before the actual automatic paper feed operation, that is, if the state memory device (Elip-flop) 34 is in the set state, the platen is driven to rotatein -the reverse direction by a predetermined number of several pulscs (s-tep nl)and, then, the platen is driven to ro tate forward by the precle termined number of several pulses (step n2) so as to compensate for the displacement caused by the backlash during the manual paper feed operation. When the compensating operation is completed, the state memory device (flip-flop) 34 is reset (step n3), and the actual au tornatic paper feed operation is con-ducted.
If the state memory device (flip-flop) 34 is in the reset state when the automatic paper feed instruction is developed, the compensating operation of the steps nl, n2 and n3 is not conducted. That is, the compensating operation is conducted only when the manual paper feed operation has been conducted before the actual automatic paper feed operation.
Ar embodiment of the invention thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications are intended Jo be included within the scope oE the following claims.
A paper feed system in a printer, especially a typewriter, generally includes a platen for supporting a recording paper sheet. The platen is mechanically connected to a paper feed drive motor such as a pulse motor via a transmission gear mechanism. The platen is driven to rotate by the paper feed drive motor so that the recording paper sheet mounted on the platen is fed forward or backward (reverse) to position the recording paper sheet at a desired location.
In such a paper feed system, an accurate paper positioning is difficult to control due to the backlash in the transmission gear mechanism which is disposed between the platen and the paper feed drive motor, or due to the looseness included in the bearing portion of the transmission gear mechanism.
3~7~
The backlash greatly influences on the accuracy of the paper sheet posi-tion-ing if the printing operation is conducted after a certai.n ainount of Eorwar(l feed, and then the printing operation is carried out subsequent to a certain amount of reverse feed. Therefore, in the conventional system, when the rever.se feed is conducted, the reverse feed is first conducted to a predeter-mined amount which is greater than a desired amount by an excess distance corresponding to several pulses, and then, ttle forward- feed is carried out by the excess distance so as to minimize the positioning error caused by the backlash.
However, as is well known, the paper feed is rnanually conduc$ed in addition to the motor driven automatic feed. In the manual feed operation, the platen is manually rotated to shift the recording paper sheet around the platen. In the conventional system, the positioning error caused by the backlash can not be compensated when the manual feed is conducted between two sequential operations of the motor driven a~toma$ic feed More specifically, when the motor driven automatic feed is conducted after the manual forward feed or the manual reverse feed, the motor driven automatic feed is carried out from the position which includes the backlash error created in the manual feed operation.
Accordingly, an object of the present invention is to provide a novel and improved paper Eeed control system in a printer such as a typewriter.
The present inventi.on wi:ll become more readi:ly apparent from the detailed descri.ption given hereinafter. It should be understood/ however, that the detalled descri.ption and specifi.c examples, whi]e indlcating preEerred embodiments of lie invention, are given by way of illustration only, since various changes and modifications within the spirit and scope of the invention will become apparent to those skilled in the art from this detailed description.
The present invention provi.des a paper Eeed control system in a printer which includes a platen, a paper weed drive motor and a transmission gear mechanism disposed between the paper feed drive motor and the platen for conducting automatic paper feed, and wherein a manual paper feed operation can be effected by manual rotation of the platen, the paper feed control system comprising manual papex feed detection means for providing a detection output in response to the manual paper feed operation, temporary storage means for temporarily storing the detection output of the manual paper feed detection means, determination means for determini.ng the condition of the temporary storage means when an automatic paper feed instruction is developed and compensating drive means for rotating the platen .in a reverse direction by a predetermined amount and, then, rotating the platen in a forward direction by the predetermined amount if the determination means determines that the manual paper feed detection means has detected a manual paper feed operation, whereby prior to rescuing automatic paper feed the platen is adjusted to reduce backlash error that is produced in conducting the manual paper feedO
I, By this reverse and forward paper drive before initiating an actual printing operation, backlash error due to the manual paper feed is minimized.
The present invention will be better understood from the detailed description of an embodiment thereof given heFeinbelow and shown in the accompanying drawings, which are given by way of illustration only and thus are not limitative of the present invention and wherein:
FIGURE 1 is a circuit diagrarn of an essential part of an embodiment of a paper feed control system of the present invention;
FIGURE 2 is a flow chart for explaining an operational mode of the paper feed control system; and FIGURE 3 is a plan view of a slit plate included in the paper feed control system of FIGURE 1.
7~ 3~3 A paper feed control system embodying the present invention includes manual paper feed detection unit which detects when the manual paper feed is conducted, The manual paper feed detection unit incl-ldes two sensing devices.
The first sensing device includes a slit plate secured to a rota-ting shaft of apaper feed drive motor, and an optical detection unit associated with the slit plate. The second sensing device includes a detection member associated with a clutch mechanism of the transmisslon gear mechanism which is disposed between a platen and a paper feed drive motor.
The first sensing device is effective to detect a first manual operation mode wherein the manual paper feed is conducted by rotating a knob secured to the platen while the platen is mechanically connected to $he shaft of the paper feed drive motor via the clutch mechanism. The second sensing device is effective to detect a second manual feed operation mode wherein the platen is manually rotated in order to conduct a fine adjustment while the platen is disconnected from the paper feed drive motor through the use oE the clutch mechanism.
As shown in Figure 1, the first sensing device includes a slit plate 10 secured to the rotating shaft oE the paper feed drive motor, a light emitting element 12, and a light responsive element 14 which detects a light beam emitted from the light emitting element 12 and passing through the slit plate 10. In the first mode of manual operation, the rotating shaft of the paper feed drive motor is manually rotated via the platen and the clutch mechanism. That is, the slit plate 10 rotates when the first mode of manual paper feed i9 conducted.
3'7~
The slit plate 10 is provided with slits 100, 10:2, 104, 106, 108 and 110 as shown in FIGURE 3. In the automatic paper feed operation, the paper feed drive motor (a four-phase pulse motor) is contro11ed in a fixed pi se reLntion-ship. More specif icQ11y, the motor drive iB conducted in a Eour step unit, namely A~B ~A~B~A, and the rmotor rotation is controlled in such a manner that the paper feed drive motor is stopped at phase A. The s:Lits 100, 102, 104, 106, 108 and 110 are provided at positions corresponding to the above-mentioned phase A.
Accordingly, if the first mode of manual feed is conducted, the slit plate 10 rotates to repeatedly interrupt the light beam emitted from the light emitting element 12. A first detection output (+Vcc~ is generated on an output line 16 when the light responsive element 14 does not receive the light beam emitted from the light emitting element 12. That is, the detection output (~Vcc) indicates when the first mode of manual paper feed is being conducted. While the first mode of manual paper feed is conducted, the paper feed drive motor is subject to the A phase control and, therefore, the paper feed drive motor is stopped at the position corresponding to phase A by means of an electrical detent force.
The second sensing device includes a sensor 20 associated with the clutch mechanism which is disposed between the platen and the paper feed drive motor. The sensor 20 develops a second detection output (+Vcc) on an output line 22 when the clutch mechanism is disconnected.
The output lines 16 and 22 are connected to an OR gaze 30. That is, the first and second detection outputs are introduced into the OR gate 30. An output signal of -the OR gate 30 is introcluced into an input terminal of an AND gate 32. An output signal of the AND Nate 32 is introduced into a set input terminal of a state memory device (flip-flop) 34. The o-ther input terminal of the AND gate 32 is connected to receive a motor drive signal MD, which controls the paper feed drive motor, via an inverter 36. Accordingly, the AND gate 32 is disabled when the automatic paper feed is conducted by the paper feed drive motor, and the ANI~ gate 32 is enabled when the automatic paper feed is not conducted, when the manual paper fled can be conducted.
If the manual paper feed operation is conducted while the automatic paper feed is not being conducted, either one of the first and second sensing devices detects the manual paper feed operation, and develops the detection output.
The detection output is temporarily stored in the state memory device ([lip-flop) 34. That is, the set state of the state memory device ~flip-flop) 34 indicates that the manual paper feed operation has been conducted. Contrar-ily, the reset state of the state memory device (flip-flop) 34 indicates that the manual paper feed operation has not been conducted.
When the automatic paper feed instruction is developed in the actual printing operation, the control system first checks the condition of the state memory device (flip-flop) 34 as shown in FIGURE 2. If the state memory device (flip-flop) 34 is in the set state, a compensating operation of steps nl, n2 and n3 isfirst conducted and, then, the actual paper feed opera-tion is conducted.
More specifically, if the manual paper feed operation has been conducted before the actual automatic paper feed operation, that is, if the state memory device (Elip-flop) 34 is in the set state, the platen is driven to rotatein -the reverse direction by a predetermined number of several pulscs (s-tep nl)and, then, the platen is driven to ro tate forward by the precle termined number of several pulses (step n2) so as to compensate for the displacement caused by the backlash during the manual paper feed operation. When the compensating operation is completed, the state memory device (flip-flop) 34 is reset (step n3), and the actual au tornatic paper feed operation is con-ducted.
If the state memory device (flip-flop) 34 is in the reset state when the automatic paper feed instruction is developed, the compensating operation of the steps nl, n2 and n3 is not conducted. That is, the compensating operation is conducted only when the manual paper feed operation has been conducted before the actual automatic paper feed operation.
Ar embodiment of the invention thus described, it will be obvious that the same may be varied in many ways. Such variations are not to be regarded as a departure from the spirit and scope of the invention, and all such modifications are intended Jo be included within the scope oE the following claims.
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A paper feed control system in a printer which includes a platen, a paper feed drive motor and a transmission gear mechanism disposed between said paper feed drive motor and said platen for conducting automatic paper feed, and wherein a manual paper feed operation can be effected by manual rotation of said platen, said paper feed control system comprising:
manual paper feed detection means for providing a detection output in response to said manual paper feed operation;
temporary storage means for temporarily storing said detection output of said manual paper feed detection means;
determination means for determining the condition of said temporary storage means when an automatic paper feed instruction is developed; and compensating drive means for rotating said platen in a reverse direction by a predetermined amount and, then, rotating said platen in a forward direction by said predetermined amount if said determination means determines that said manual paper feed detection means has detected a manual paper feed operation, whereby prior to rescuing automatic paper feed the platen is adjusted to reduce backlash error that is produced in conducting said manual paper feed.
manual paper feed detection means for providing a detection output in response to said manual paper feed operation;
temporary storage means for temporarily storing said detection output of said manual paper feed detection means;
determination means for determining the condition of said temporary storage means when an automatic paper feed instruction is developed; and compensating drive means for rotating said platen in a reverse direction by a predetermined amount and, then, rotating said platen in a forward direction by said predetermined amount if said determination means determines that said manual paper feed detection means has detected a manual paper feed operation, whereby prior to rescuing automatic paper feed the platen is adjusted to reduce backlash error that is produced in conducting said manual paper feed.
2. The paper feed control system of Claim 1, said manual paper feed detection means including:
a slit plate secured to a shaft of said paper feed drive motor;
an optical detection unit which develops a rotation sensing output when said slit plate rotates; and logic means for developing said detection output when said rotation sensing output is developed from said optical detection unit while an automatic paper feed operation is not being conducted.
a slit plate secured to a shaft of said paper feed drive motor;
an optical detection unit which develops a rotation sensing output when said slit plate rotates; and logic means for developing said detection output when said rotation sensing output is developed from said optical detection unit while an automatic paper feed operation is not being conducted.
3. The paper feed control system of Claim 2, said printer further including a clutch mechanism disposed in said transmission gear mechanism, and said manual paper feed detection means further including:
disconnection detection means for developing a disconnection sensing output when said clutch mechanism is disconnected; and control means for developing said detection output when said disconnection sensing output is developed by said disconnection detection means.
disconnection detection means for developing a disconnection sensing output when said clutch mechanism is disconnected; and control means for developing said detection output when said disconnection sensing output is developed by said disconnection detection means.
4. A printer comprising a manually rotatable platen, drive means for rotating said platen and a paper feed control system including:
means responsive to manual rotation of said platen for providing a detection output signal;
means for storing said detection output signal;
and means responsive to said stored detection output signal for rotating said platen in a reverse direction and subsequently in a forward direction upon operation of said drive means, whereby prior to rescuing automatic paper feed the platen is adjusted to reduce backlash error that is produced in conducting said manual paper feed.
means responsive to manual rotation of said platen for providing a detection output signal;
means for storing said detection output signal;
and means responsive to said stored detection output signal for rotating said platen in a reverse direction and subsequently in a forward direction upon operation of said drive means, whereby prior to rescuing automatic paper feed the platen is adjusted to reduce backlash error that is produced in conducting said manual paper feed.
5. A printer as claimed in Claim 4, wherein said detection output signal means comprise means for sensing rotation of said platen.
6. A printer as claimed in Claim 4 or 5, wherein said detection output signal means comprise means responsive to operation of a clutch between said drive means and said platen.
7. A printer as claimed in Claim 4, wherein said detection output signal for sensing means further comprise means for disconnection of said drive means from said platen, and means for outputting said detection output signal in response to an output signal from one of said sensing means.
8. A printer as claimed in Claim 7, further comprising means responsive to energization of said drive means for controlling the application of said detection output signal to said storage means.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59-14154 | 1984-01-25 | ||
| JP59014154A JPS60155478A (en) | 1984-01-25 | 1984-01-25 | Paper feeder for printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1237089A true CA1237089A (en) | 1988-05-24 |
Family
ID=11853229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000472507A Expired CA1237089A (en) | 1984-01-25 | 1985-01-21 | Paper feed control in a printer |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US4645365A (en) |
| EP (1) | EP0151425B1 (en) |
| JP (1) | JPS60155478A (en) |
| CA (1) | CA1237089A (en) |
| DE (1) | DE3579828D1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3490763T1 (en) * | 1984-09-20 | 1987-02-19 | ||
| JPS61277545A (en) * | 1984-12-24 | 1986-12-08 | Tokyo Electric Co Ltd | Method of controlling paper for printer |
| DE3664745D1 (en) * | 1985-01-28 | 1989-09-07 | Siemens Ag | Method for controlling the paper-feeding in a printing device |
| JPS62111772A (en) * | 1985-11-09 | 1987-05-22 | Fujitsu Ltd | Slip setting method in printer |
| US4761087A (en) * | 1985-11-12 | 1988-08-02 | Genicom Corporation | Printer with automatic printed paper advancement to tear-off position and subsequent retraction to new first print line |
| EP0333060B1 (en) * | 1988-03-14 | 1992-10-21 | Seiko Epson Corporation | Method and device for supplying the paper in the printer |
| JPH0323966A (en) * | 1989-06-21 | 1991-01-31 | Brother Ind Ltd | Paper feed device |
| GB2243926B (en) * | 1990-03-12 | 1994-02-16 | Ricoh Kk | Motor control apparatus for controlling motor for selectively driving two mechanisms |
| US5513919A (en) * | 1993-04-27 | 1996-05-07 | Gerber Scientific Products, Inc. | Method and apparatus for printing on sheet material |
| US6830399B2 (en) * | 2003-03-14 | 2004-12-14 | Lexmark International, Inc. | Methods and systems for compensation of media indexing errors in a printing device |
| JP6478036B2 (en) | 2015-03-20 | 2019-03-06 | セイコーエプソン株式会社 | Recording apparatus and method of moving medium support unit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2208111C3 (en) * | 1972-02-21 | 1974-08-15 | Kreuzer, Erwin, 5300 Bonn | Capillary pen for liquid inks |
| US3749221A (en) * | 1972-02-24 | 1973-07-31 | Addmaster Corp | Paper feed mechanism for data printers |
| US3844395A (en) * | 1973-09-12 | 1974-10-29 | Extel Corp | Text display control for data printer |
| DE2658904C3 (en) * | 1976-12-24 | 1979-09-13 | Olympia Werke Ag, 2940 Wilhelmshaven | Feed device on electrical typing, booking and other machines |
| JPS55774A (en) * | 1979-05-01 | 1980-01-07 | Seikosha Co Ltd | Electrically conductive adhesive part and its use |
-
1984
- 1984-01-25 JP JP59014154A patent/JPS60155478A/en active Granted
-
1985
- 1985-01-21 DE DE8585100590T patent/DE3579828D1/en not_active Expired - Lifetime
- 1985-01-21 CA CA000472507A patent/CA1237089A/en not_active Expired
- 1985-01-21 EP EP85100590A patent/EP0151425B1/en not_active Expired
- 1985-01-22 US US06/693,458 patent/US4645365A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0151425B1 (en) | 1990-09-26 |
| JPH0532229B2 (en) | 1993-05-14 |
| DE3579828D1 (en) | 1990-10-31 |
| JPS60155478A (en) | 1985-08-15 |
| EP0151425A2 (en) | 1985-08-14 |
| US4645365A (en) | 1987-02-24 |
| EP0151425A3 (en) | 1988-06-01 |
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